cc: Add UMA stats for record and raster time.

cc/resources/recording_source.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_RESOURCES_RECORDING_SOURCE_H_
 #define CC_RESOURCES_RECORDING_SOURCE_H_
 
 #include "base/memory/ref_counted.h"
 #include "cc/base/cc_export.h"
 #include "third_party/skia/include/core/SkColor.h"
@@ skipping 19 matching lines @@
   // Re-record parts of the picture that are invalid.
   // Invalidations are in layer space, and will be expanded to cover everything
   // that was either recorded/changed or that has no recording, leaving out only
   // pieces that we had a recording for and it was not changed.
   // Return true iff the pile was modified.
   virtual bool UpdateAndExpandInvalidation(ContentLayerClient* painter,
                                            Region* invalidation,
                                            const gfx::Size& layer_size,
                                            const gfx::Rect& visible_layer_rect,
                                            int frame_number,
-                                           RecordingMode recording_mode) = 0;
+                                           RecordingMode recording_mode,
+                                           int* recorded_area) = 0;

[jbroman, 2015/04/09 17:06:54]

Unsure about parameter order. Style guide tells me all out and in-out parameters
should be at the end with Chromium style, but existing ones are at the
beginning, so I'm not sure.

 
   virtual scoped_refptr<RasterSource> CreateRasterSource(
       bool can_use_lcd_text) const = 0;
 
   virtual gfx::Size GetSize() const = 0;
   virtual void SetEmptyBounds() = 0;
   virtual void SetSlowdownRasterScaleFactor(int factor) = 0;
   virtual void SetGatherPixelRefs(bool gather_pixel_refs) = 0;
   virtual void SetBackgroundColor(SkColor background_color) = 0;
   virtual void SetRequiresClear(bool requires_clear) = 0;
   virtual bool IsSuitableForGpuRasterization() const = 0;
 
   // TODO(hendrikw): Figure out how to remove this.
   virtual void SetUnsuitableForGpuRasterizationForTesting() = 0;
   virtual gfx::Size GetTileGridSizeForTesting() const = 0;
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RECORDING_SOURCE_H_